Comparison of Time Required by D-RaCe, R-Endo and Mtwo Instruments for Retreatment: An in vitro Study

Garg, Akansha; Nagpal, Ajay; Shetty, Shilpa; Kumar, Sunil; Singh, Kamal Krishan; Garg, Amit

doi:10.7860/jcdr/2015/11100.5596

Cited by 11 publications

(18 citation statements)

References 17 publications

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“…However, there was no difference between the retreatment times of the Mtwo R and D-RaCe systems. This finding is in agreement with that of a recent study (21). The PTUR system consists of 3 files.…”

Section: Discussionsupporting

confidence: 94%

Apical Transportation during Removal of Root Canal Filling with Different Retreatment Systems

et al. 2016

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Section: Discussionsupporting

confidence: 94%

Apical Transportation during Removal of Root Canal Filling with Different Retreatment Systems

et al. 2016

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“…R-Endo was slower than the D-RaCe system which accounts for the lack of active tip and radial land making it difficult for initial penetration and progression into GP. 4,15 In this study, the PTUR system is slower in GP retrieval than all groups except the Mtwo R system. PTUR files have a progressive taper and convex triangular cross-section.…”

Section: Discussionmentioning

confidence: 59%

“…One hundred and twenty teeth were randomly separated into six groups and GP was retrieved by six different techniques. 4,14 Group I: Hand Instrumentation GP from coronal one-third was removed using GG drill (Dentsply Maillefer, Ballaigues, Switzerland) size 3 and subsequently size 2. GP was retrieved with H file size #30 to the WL using a circumferential filing motion.…”

Section: Retreatment Proceduresmentioning

confidence: 99%

Comparison of the Time Required by Six Different Retreatment Techniques for Retrieval of Gutta-Percha: An In Vitro Study

Indi

Desai²,

Hambire

et al. 2022

European Journal of General Dentistry

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Objective A retreatment is a conservative approach than periapical surgery in case of failed root canal treatment. Retreatment techniques that are efficient and faster should be the main concern to treat endodontic failure. This study aimed to compare the time required by various hand and rotary retreatment systems for the retrieval of gutta-percha (GP) from root canals. Materials and Methods A total of 120 extracted single-rooted premolar teeth with straight canals were chosen. Biomechanical preparation was completed using the Step-Back approach keeping the master apical file size 35. Then, teeth were down-packed and back-filled with System B device, along with AH Plus sealer. The teeth were categorized into six groups (n = 20) at random as per techniques applied for retrieval of GP: group I hand instrumentation (Hedstrom files and Gates-Glidden drills); group II ProTaper Universal Retreatment (PTUR) system; group III Mtwo Retreatment (Mtwo R) system; group IV D-RaCe; group V R-Endo; and group VI Mani Gutta Percha Remover (NRT-GPR). A chronometer was used to measure the time required for retrieval of GP. Data were examined by comparative evaluation of one-way analysis of variance and chi-square test. Results Among all the retreatment techniques used, D-RaCe was faster in GP retrieval than other groups. NRT-GPR system also took less time than other groups except for the D-RaCe system. The Mtwo R system was the slowest among all groups. Conclusion D-RaCe retreatment instruments required extensively less time for retrieval of GP than other groups (p < 0.001).

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“…Garg et al (32) supported the R-Endo retreatment files that has an active cutting tip, which helps in the initial progression through the gutta-percha and provide adequate cleaning while respecting the canal anatomy. In addition the Revo-S system instruments have asymmetric cross section that induce a snake-like behavior of the file along the canal (33) .…”

Section: Discussionmentioning

confidence: 99%

Efficacy of Multiple Rotary File Systems in Retreatment of Oval-shaped Root Canals in Mandibular Molars: A Cone-Beam Computed Tomography Study

Hassan

Rabie

Ibrahim

et al. 2021

Egyptian Dental Journal

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Aim: To evaluate effectiveness of multiple rotary file systems on removal of the filling materials during retreatment of oval-shaped root canals.Methods: 40 oval root canals were instrumented with ProTaper Next to size X4 (40/.06). The canals were then allocated into two equal groups according to the final rinse, Group I: with Biopure MTAD, and Group II: with 17% EDTA. All the canals were later obturated with bioceramic based root canal sealer and gutta-percha using cold lateral compaction technique. According to the used retreatment rotary system, each group were further subdivided into two equal subgroups including subgroups Ia & IIa using D-Race (DR1) (30/.10) + XP-endo Shaper (XPS) (30/.04) + XP-endo Finisher R (XPFR), and subgroups Ib & IIb using R-Endo retreatment files up to R3 (25/.04) + Revo-S rotary files up to (40/.06). CBCT scans were used to calculate the remaining amount of root filling materials based on a certain threshold given to identify the density of dentin from that of the gutta percha at the pre scan (after obturation), and that of air at the post scan (after retreatment). The dentin volumes were also recorded at both scans to analyze the amount of remaining filling materials.Results: No significant differences were recorded regarding the amount of residual filling material with the tested systems (p > 0.05). Intra subgroups assessments showed more filling material removed when using a larger sized final instrument (p < 0.001).Conclusions: Tested file systems were evenly efficient in removing filling materials from ovalshaped root canals of extracted molars. Types of chelators used and bioceramic based sealer had no significant validity on effectiveness of removal of root canal filling material.

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Comparison of Time Required by D-RaCe, R-Endo and Mtwo Instruments for Retreatment: An in vitro Study

Cited by 11 publications

References 17 publications

Apical Transportation during Removal of Root Canal Filling with Different Retreatment Systems

Apical Transportation during Removal of Root Canal Filling with Different Retreatment Systems

Comparison of the Time Required by Six Different Retreatment Techniques for Retrieval of Gutta-Percha: An In Vitro Study

Efficacy of Multiple Rotary File Systems in Retreatment of Oval-shaped Root Canals in Mandibular Molars: A Cone-Beam Computed Tomography Study

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